We finally got our smart cards working with ThinOS 9.1 (), and everything seemed to be working fine on our LAN using the thin clients until we used them to connect to our Horizon environment through the UAG's over the WAN and tried to use Zoom and/or Teams.

Windows 10 20H2 (Ent.) 4 CPU/16 GB RAM/ 75GB Disk.

Since the original post, we have upgraded a few things. I just wanted to give an update on this post. I know there are a lot of moving parts to this environment, but I am hoping someone else has run into this same or similar issue and can offer some suggestions! Other than Zoom, the environment with the remote thin clients and UAG's work great, but my boss considers this Zoom issue a 'showstopper' and is hesitant to release this service to our users until this is resolved. VDI image has all the latest updates and agents, and all applications are local, no AppStacks involved.

Connection servers on the internal network are also behind a F5 load balancer. UAG's are behind the corporate firewall and F5 load balancers, and the only ports open for remote connectivity are 4 (PCoIP).

Made some typical optimizations and other registry changes to the VDI image to for situations where high latency could be an issue, but that has not made a difference.

I understand that it should be better over the VPN because of dedicated resources vs.

However, if I connect to our corporate network using a laptop with a traditional VPN, and use the Horizon Client to connect to the same pool, Zoom works MUCH better in VDI. VDI resources are not an issue, CPU/RAM/GPU are all under 50% utilized with Zoom running. Audio and video is choppy and frequently freezes up. If I log in remotely using a thin client, authenticate through the UAG's, get assigned a desktop and fire up Zoom, the experience is horrible, and basically unusable. We are using VDI with PCoIP in our environment. Looking for some assistance on using Zoom in our VDI environment, mostly for users logging in remotely using Dell thin clients (and UAG's for authentication).

Zoom plugin for vmware horizon client